#! /bin/sh

#   no-bogus-m4-defines - detect wrong m4 definitions
#   -------------------------------------------------
#   Try to catch the case where 'aclocal' pulls installed libtool
#   macro file contents from another version of libtool into the
#   current package 'aclocal.m4'.  Currently used by 'make dist'
#   and by ./bootstrap (bootstrap.conf).
#
#   Copyright (C) 2015-2019, 2021-2025 Free Software Foundation, Inc.
#
#   This file is part of GNU Libtool.
#
# GNU Libtool is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# GNU Libtool is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.

# Please report bugs or propose patches to bug-libtool@gnu.org.

. `echo "$0" |${SED-sed} 's|[^/]*$||'`/funclib.sh
# source this for "GNU m4" detection methods
. `echo "$0" |${SED-sed} 's|[^/]*$||'`/extract-trace

$require_gnu_m4

bogus_macros='LT_INIT AC_PROG_LIBTOOL AM_PROG_LIBTOOL'

bogus_macros_grep=''
for macro in $bogus_macros; do
  func_append bogus_macros_grep "/$macro/p;"
done

clean_false_alarms="pushdef(\`AC_BEFORE', \`')"

bogus_macros_check_output=`$ECHO "$clean_false_alarms" \
  |$M4 - aclocal.m4 libltdl/aclocal.m4 \
  |$SED -n "$bogus_macros_grep"`

exit_val=0
for macro in $bogus_macros; do
  case $bogus_macros_check_output in
    *$macro*)
      func_error "Bogus $macro macro definition in an aclocal.m4 file"
      exit_val=1
      ;;
  esac
done

exit $exit_val
